EP0965337A1 - Verfahren zur Herstellung von Vorrichtungen zur kontrollierten Freisetzung von Wirkstoffen - Google Patents
Verfahren zur Herstellung von Vorrichtungen zur kontrollierten Freisetzung von Wirkstoffen Download PDFInfo
- Publication number
- EP0965337A1 EP0965337A1 EP99114947A EP99114947A EP0965337A1 EP 0965337 A1 EP0965337 A1 EP 0965337A1 EP 99114947 A EP99114947 A EP 99114947A EP 99114947 A EP99114947 A EP 99114947A EP 0965337 A1 EP0965337 A1 EP 0965337A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- active substance
- matrix
- erodible
- mass
- containing matrix
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2095—Tabletting processes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2072—Pills, tablets, discs, rods characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/20—Pills, tablets, discs, rods
- A61K9/2072—Pills, tablets, discs, rods characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
- A61K9/2086—Layered tablets, e.g. bilayer tablets; Tablets of the type inert core-active coat
Definitions
- the invention relates to a method for producing devices for the controlled release of active ingredients, consisting of an active ingredient Matrix and an erodable at least partially covering the matrix Solid mass, the thickness of the erodible mass over its Extent is determined by thickness gradients.
- Devices of this type are described in patent application DE-A-4341442. They are used to contain active substances in liquid media, such as. B. Body fluids controlled, d. H. release with a given speed profile.
- An important area of application for these devices is oral administration of drugs. The goal here is often to use active ingredients with short biological half-life to be administered in such a way that with low intake frequency uniform plasma concentrations are maintained
- the rate profile of drug release in these devices especially the thickness gradient of the erodible solid mass co-determined which the active substance-containing matrix initially at least partially cover.
- the contact area between the active substance-containing matrix and the liquid medium in which the device is located is the contact area between the active substance-containing matrix and the liquid medium in which the device is located.
- the active ingredient Matrix and the erodible mass in a continuous process as a rail, band or strand-shaped material is produced and from it by cutting or punching devices for the controlled release of active substances be won.
- the active substance-containing matrix and the erodible mass is shaped and brought together in one process step.
- the inventive method is particularly useful if the Active ingredient or other necessary components of the device cannot be tabletted are, as is the case with liquid substances or solid substances low melting point is the case or if for some other reason the tableting should be dispensed with, since the formation of the active ingredient Matrix and / or the erodible solid mass now by an alternative Process can take place.
- thermoplastic raw materials Processes that take advantage of thermoplasticity are appropriate and shape the materials by melting, casting, injecting or extruding.
- the active substance-containing matrix will often be preferred initially in the form of a web, band or strand-shaped body.
- This material can be used - if necessary, while it is still warm - make indentations or thickness gradients by stamping or rolling, the subsequent contact with the erodable solid mass essentially determine the thickness gradients of the latter.
- Devices of the above Art can then be cut or punched be singled out.
- the starting materials have no pronounced thermoplastic properties have.
- the shaping can also be carried out with the help of a liquid phase, i.e. by processing a solution, a gel, a suspension or paste.
- solutions and suspensions for example Coat carrier films and then dry them create web-shaped bodies.
- solutions and suspensions for example Coat carrier films and then dry them create web-shaped bodies.
- Type can also include the combination of process steps of different types. For example, it may be advantageous to start with the active ingredient Matrix through one or more coating processes connected in series to produce, then emboss them with stamps and then in the wells the erodible mass in molten State to inject.
- the adhesive auxiliaries are applied preferably in that there is a solution of these substances in a coating, spraying or dipping process is applied.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Medicinal Preparation (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
Claims (8)
- Verfahren zur Herstellung von Vorrichtungen zur kontrollierten Freisetzung von Wirkstoffen, bestehend aus einer wirkstoffhaltigen Matrix und einer die Matrix mindestens teilweise bedeckenden erodierbaren Feststoffmasse, wobei die Dicke der erodierbaren Masse über deren Erstreckung durch Dickegradienten bestimmt ist, dadurch gekennzeichnet, daß die wirkstoffhaltige Matrix und die erodierbare Masse in einem kontinuierlichen Prozeß als bahn-, band- oder strangförmiges Material hergestellt und daraus durch Schneiden oder Stanzen Vorrichtungen zur kontrollierten Freisetzung von Wirkstoffen gewonnen werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die wirkstoffhaltige Matrix zusätzlich Vertiefungen besitzt.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Vertiefungen durch Stempeln oder Walzen in die wirkstoffhaltige Matrix eingebracht werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die wirkstoffhaltige Matrix und/oder die erodierbare Masse aus thermoplastischem Material in einem Schmelz-, Gieß-, Injektions- oder Extrusionsverfahren geformt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die wirkstoffhaltige Matrix und die erodierbare Masse koextrudiert werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die wirkstoffhaltige Matrix und/oder die erodierbare Masse unter Zuhilfenahme einer flüssigen Phase aus einer Lösung, Suspension, Paste oder Gel geformt und fallweise die flüssige Phase verdampft wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Vorrichtung zur kontrollierten Freisetzung von Wirkstoffen mit mehr als einer wirkstoffhaltigen Matrix hergestellt wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß vor dem Zusammenbringen von wirkstoffhaltiger Matrix und erodierbarer Masse ein adhäsionsfördernder Hilfsstoff auf die Kontaktfläche zwischen den beiden Komponenten aufgebracht wird
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4416926 | 1994-05-13 | ||
| DE4416926A DE4416926C2 (de) | 1994-05-13 | 1994-05-13 | Verfahren zur Herstellung von Vorrichtungen zur kontrollierten Freisetzung von Wirkstoffen |
| EP95920805A EP0758884B1 (de) | 1994-05-13 | 1995-05-08 | Verfahren zur herstellung von vorrichtungen zur kontrollierten freisetzung von wirkstoffen |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95920805A Division EP0758884B1 (de) | 1994-05-13 | 1995-05-08 | Verfahren zur herstellung von vorrichtungen zur kontrollierten freisetzung von wirkstoffen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0965337A1 true EP0965337A1 (de) | 1999-12-22 |
| EP0965337B1 EP0965337B1 (de) | 2004-07-28 |
Family
ID=6518074
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95920805A Expired - Lifetime EP0758884B1 (de) | 1994-05-13 | 1995-05-08 | Verfahren zur herstellung von vorrichtungen zur kontrollierten freisetzung von wirkstoffen |
| EP99114947A Expired - Lifetime EP0965337B1 (de) | 1994-05-13 | 1995-05-08 | Verfahren zur Herstellung von Vorrichtungen zur kontrollierten Freisetzung von Wirkstoffen |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95920805A Expired - Lifetime EP0758884B1 (de) | 1994-05-13 | 1995-05-08 | Verfahren zur herstellung von vorrichtungen zur kontrollierten freisetzung von wirkstoffen |
Country Status (10)
| Country | Link |
|---|---|
| EP (2) | EP0758884B1 (de) |
| JP (1) | JPH10500118A (de) |
| AT (2) | ATE198151T1 (de) |
| CA (1) | CA2189991C (de) |
| DE (3) | DE4416926C2 (de) |
| DK (1) | DK0758884T3 (de) |
| ES (2) | ES2155131T3 (de) |
| GR (1) | GR3035533T3 (de) |
| PT (1) | PT758884E (de) |
| WO (1) | WO1995031185A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006019634A1 (en) * | 2004-08-12 | 2006-02-23 | Medtronic Vascular, Inc. | Stent coating with gradient porosity |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524753A1 (de) * | 1995-07-07 | 1997-01-23 | Lohmann Therapie Syst Lts | Schichttablette zur kontrollierten Freisetzung von Wirkstoffen |
| DE19640062B4 (de) | 1996-09-28 | 2006-04-27 | Lts Lohmann Therapie-Systeme Ag | Orale Zubereitung, enthaltend in einer in wässrigem Medium quellbaren Matrix wenigstens einen pharmazeutischen Wirkstoff |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994007470A1 (en) * | 1992-09-30 | 1994-04-14 | Pfizer Inc. | Article containing a core and a coating having a non constant thickness |
| CN1091003A (zh) * | 1993-02-17 | 1994-08-24 | 杨吉田 | 药物非平面膜剂及其制备工艺 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1237904B (it) * | 1989-12-14 | 1993-06-18 | Ubaldo Conte | Compresse a rilascio a velocita' controllata delle sostanze attive |
| DE4341442C2 (de) * | 1993-12-04 | 1998-11-05 | Lohmann Therapie Syst Lts | Vorrichtung zur kontrollierten Freisetzung von Wirkstoffen sowie ihre Verwendung |
-
1994
- 1994-05-13 DE DE4416926A patent/DE4416926C2/de not_active Expired - Fee Related
-
1995
- 1995-05-08 EP EP95920805A patent/EP0758884B1/de not_active Expired - Lifetime
- 1995-05-08 EP EP99114947A patent/EP0965337B1/de not_active Expired - Lifetime
- 1995-05-08 WO PCT/EP1995/001725 patent/WO1995031185A1/de not_active Ceased
- 1995-05-08 AT AT95920805T patent/ATE198151T1/de not_active IP Right Cessation
- 1995-05-08 DE DE59510932T patent/DE59510932D1/de not_active Expired - Fee Related
- 1995-05-08 DE DE59508911T patent/DE59508911D1/de not_active Expired - Fee Related
- 1995-05-08 AT AT99114947T patent/ATE271855T1/de not_active IP Right Cessation
- 1995-05-08 ES ES95920805T patent/ES2155131T3/es not_active Expired - Lifetime
- 1995-05-08 CA CA002189991A patent/CA2189991C/en not_active Expired - Fee Related
- 1995-05-08 DK DK95920805T patent/DK0758884T3/da active
- 1995-05-08 JP JP7529327A patent/JPH10500118A/ja not_active Withdrawn
- 1995-05-08 PT PT95920805T patent/PT758884E/pt unknown
- 1995-05-08 ES ES99114947T patent/ES2224505T3/es not_active Expired - Lifetime
-
2001
- 2001-03-09 GR GR20010400372T patent/GR3035533T3/el not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994007470A1 (en) * | 1992-09-30 | 1994-04-14 | Pfizer Inc. | Article containing a core and a coating having a non constant thickness |
| CN1091003A (zh) * | 1993-02-17 | 1994-08-24 | 杨吉田 | 药物非平面膜剂及其制备工艺 |
Non-Patent Citations (1)
| Title |
|---|
| DATABASE WPI Section Ch Week 9715, Derwent World Patents Index; Class B07, Page 33, AN 97-154886, XP002055483 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006019634A1 (en) * | 2004-08-12 | 2006-02-23 | Medtronic Vascular, Inc. | Stent coating with gradient porosity |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE198151T1 (de) | 2001-01-15 |
| JPH10500118A (ja) | 1998-01-06 |
| CA2189991A1 (en) | 1995-11-23 |
| EP0965337B1 (de) | 2004-07-28 |
| PT758884E (pt) | 2001-06-29 |
| ES2224505T3 (es) | 2005-03-01 |
| WO1995031185A1 (de) | 1995-11-23 |
| ES2155131T3 (es) | 2001-05-01 |
| CA2189991C (en) | 2006-09-12 |
| GR3035533T3 (en) | 2001-06-29 |
| DE59510932D1 (de) | 2004-09-02 |
| DE4416926A1 (de) | 1995-11-16 |
| DE59508911D1 (de) | 2001-01-25 |
| EP0758884B1 (de) | 2000-12-20 |
| ATE271855T1 (de) | 2004-08-15 |
| EP0758884A1 (de) | 1997-02-26 |
| DE4416926C2 (de) | 2000-01-13 |
| DK0758884T3 (da) | 2001-04-30 |
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